12986740

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{199}}^1\times {\mathrm{251}}^1$

素因数の和:472

約数の個数: 48

約数和(自身を含む): 29635200

約数和(自身を除く): 16648460

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 199, 251, 260, 398, 502, 796, 995, 1004, 1255, 1990, 2510, 2587, 3263, 3980, 5020, 5174, 6526, 10348, 12935, 13052, 16315, 25870, 32630, 49949, 51740, 65260, 99898, 199796, 249745, 499490, 649337, 998980, 1298674, 2597348, 3246685, 6493370, 12986740]

約数ペア:

[(1, 12986740), (2, 6493370), (4, 3246685), (5, 2597348), (10, 1298674), (13, 998980), (20, 649337), (26, 499490), (52, 249745), (65, 199796), (130, 99898), (199, 65260), (251, 51740), (260, 49949), (398, 32630), (502, 25870), (796, 16315), (995, 13052), (1004, 12935), (1255, 10348), (1990, 6526), (2510, 5174), (2587, 5020), (3263, 3980)]